Window shade



w 9 A Y. m 5 U 6 U, 2 M. ema/ m 5. E. SNYDER WINDOW SHADE v 'rnvmaSamugl E. S y

I Jr rn V 15 a'stationary spring roller adapted to actuatevent'si'dewise movement and-consequent dis- Patmed W421, 1930 I f v Q1,778,816.. m

SAMUEL E. SNYDER, or BRooKnYN, NEW YORK wmnow SHADE 7' Application filedA ril 9, 1927. seriarno, is aeeel f-i This invention relates to new anduseful spring-roller 8 andits attached shade is oper improvements inwindow shades and more ably suspended'by athebar 10 which is ofparticularly to spring-actuated shades and slightly'gr'eaterlengththantherollerand has" anobject of the invention is to provide anovel its end extremities angularly bent to [consignv arrangement,whereby a shade of adjustable tute the depending ears llfand 121whichjen- .55 3 length may be suspended at any desired'posigage and-beartheroller trunnions 13 and l l.

' tion in relation to the window opening in a Intheear11isproduced anorifice adapted'to manner to facilitate a fine and varied selecrotatablybear the rotatable trunnion 11 tion of light to the room. l 1 whilst intheear 12 is'a'nelongat'ed slot adapt- A further object is to provide asuitable ed to receive the nonrot-atab'le trunnion 14; means, whereby aspring roller and its 'at- Through'eaclrof the trunnions 13 and 14-istached shade may be operably borne and in produced-an orifice which isadapted toremovable relation to the window opening.v ceive a pin 15 orthe like tothe-exterior of-the A still further object is in theprovisionof engaging ears 11 and 12 in a manner tq'prethe further spring rollerand its attached engagement of the roller 8' and its, attached shade inrelation tothe window opening and shade J Y 4 at the same time havingsutficient tension not "The shade'6 is suspendedin adjustable greto beeffected by the tensioning of the spring lationto'the window ope'ning '5by thecords 20 in the shade roller, 16 or the likewhich are attached tothe eta A yet further object'is in the provision of 'tilonar'y" roller17in asuitable' mann'erat 18 I the novel winding-cones which coil andunanddepend-therefr'om to 'engage the'eyes 19 'coi-l the flexibleconnections fromthev shadewhich project from theshade-bearing bar 101roller device in a manner to equalize the lever- The stationaryspringroller'17 isrotatably, 5 age upon the roller in relation to thespring borne by the common bracketsQO' which are; tension of the roller.j provided with ears 21'adaptedto receive the Another object of thisinvention is in the rotatable trunnion-22 and'non rotatabletrunprovision of a shade of the character denion 23 in co mmon form. Mounteduponscribed which is simple in construction, inex each end extremityofthe roller 17 isa mem pensive to manufacture in consideration of ber24'havingthe form of a frustum of acone,

' the advantages offered; efiicie nt and durable hereafter termed cone,whichjcones have spi- 45 nate the corresponding parts:

in service; positive in action and a general ralgroovesor-threads 25produced'initheir improvement in the art. exterior surface andada'ptedt'o ce i1-;,or 'un- Other objects andmany of the attendant coilthe cords 16jin even, spacedturn in'opv 35 advantages will be readilyappreciated-as the" oration. Each-of-these'cones 24 isalso proinventionbecomes better understood from a videdwith an integral, annular flange25;

consideration of the illustrative embodiment which is preferably ofdimensions equal to v a of the same and for which pur'posesuch dethelargest diameter of the coneand adapted I scriptive drawinghasbeenhereto appended, to prevent over-winding of the cords16 into 0wherein H the trunnions and vconsequent jam. g

The single view is an elevation of a window: The cord 26 is securedtothe eye 27 of the l ,7 with the invention attached; r bar 10 in a mannerto facilitate adjustment of,

Referring more in detail to the drawing theshade mechanism-6 in relationto the win- I in which similar reference numerals desigdow-opening5,'whilst the cord 28 is secured I V to the eye 29 of the fillerstick30at thefree 95.}

It will be seen that the window 5 is nor-1 end of the shade material 7in amanner to ad mally covered by the shade 6 produced of just the shadeover the desired spaceof the c suitable, tractable material '7 attachedto the window,v V '7 1 r I spring'roller 8 in a manner to'normally windWith this novel arra thereon by the tension of the spring. The

ngement, it is obvious any desiredportion of'the window opening lQDj .l1

5 may be covered, and that when the shade 6 is at the top of the windowopening 5 and the tension spring of roller 17 is 1n relatively unwoundcondition, the cords 16 are 5 then engaging the cones 23 at theirsmaller diameter and nearer the axis of the roller. Therefore, theleverage is relatively less in proportion to the strength of the spring.Again, when the shade 6 is at the bottom of jthe window opening and thetension spring of roller-17 is in re1ative1-y'woundup condi tion, thenthe cords 16 are engaging the cones 23 at their larger diameter andfurther from the axis of the roller,: and the leverage is, greater inproportionate relationv to the strength of the spring. Accordinglybythis novel cone arrangement, the leverage is equalized in proportion tothe'variationof the spring tension of roller 17. r

i It will be obvious from the foregoing description, that this inventionis a great improvement in window shades and whilst the preferred:embodiments have been disclosed,

yet it is to be understood that minor details 25 inthe construction,combination and arrangement of the cooperating elements may be re- 7sorted to within the scope of whatisclaimed without departing fromthespirit of the invention. r

.What 1 claim is: r

The combination witha window shade consisting of a spring roller andshade attached thereto, of'a longitudinal bar having an'gu-i larlybentends adapted to operably support 5 said spring roller, a second springroller revolubly nounted' at the top of the window opening, conicalsectionsattached to the ends 'ofsaidsecond spring roller each havingaspiral groove on its outer surface, cords susi i pending the endsof saidbarfrom said conical sections, said cords having their uppermost ends .1connected to the largestends of said conical sections whereby theleverage 7 upon thesecond spring roller is equalized in .3 proportion tothe tension of the springthere,

ofwhen in operation and flanges at the small a ends of "saidconicalsections to prevent overwinding'of said cords. 1

In testimony whereof I aifix my signature.

5o .1 sAM ELn-sN DER.

